The charity, which raises its money through rugby, is using retained specialist sports agency ENS for the work.
The dress-up Friday is due to take place on 5 October and awareness will be raised through regional and trade press, with particular focus on getting coverage in the national sporting magazines and newspaper sections.
ENS account manager Henry Robson said the biggest challenge would be gaining media coverage during the beginning-of-the-season football fever. But the agency is optimistic of winning coverage off the back of the Rugby World Cup, which kicks off on 7 September.
The initiative already has backing from former internationals Rob Jones (Wales), Martin Bayfield (England), Paul Wallace (Ireland) as well as BBC commentator Ian Robertson.